scholarly journals Stochastic noise decreases the accuracy of distractor rejection in dual- compared to single-target search

2016 ◽  
Vol 16 (12) ◽  
pp. 751
Author(s):  
Doug Barrett ◽  
Oliver Zobay
Keyword(s):  
Stochastic Noise ◽  
Target Search ◽  
Single Target ◽  
Distractor Rejection

Single Line Display Menu

1995 ◽  
Vol 39 (5) ◽  
pp. 306-310 ◽  
Author(s):  
Sung H. Han ◽  
Jiyoung Kwahk
Keyword(s):  
Search Task ◽  
Design Guidelines ◽  
Consumer Products ◽  
User Preference ◽  
Single Line ◽  
Search Performance ◽  
Target Search ◽  
Search Tasks ◽  
Single Target ◽  
Speed Accuracy

Many electronic consumer products use a single line display which is capable of presenting a limited number of characters at a time. Although many design guidelines have been proposed, they are applicable only to the menus on ordinary CRT displays. This study examined the effects of four different variables: menu structure, user experience, navigation aid, and number of target items on designing the menu on a single line display. Four dependent measures, speed, accuracy, efficiency, and user preference of a target search task, were collected. The results showed that the 82 structure turned out to be an optimal menu structure for single-line display menus. The navigation aid improved the search performance of the inexperienced. Interestingly, multiple target search tasks recorded a better performance than single target search tasks. Based on the results, design implications were discussed.

scholarly journals Dual target search is neither purely simultaneous nor purely successive

2018 ◽  
Vol 71 (1) ◽  
pp. 169-178 ◽  
Author(s):  
Kyle R Cave ◽  
Tamaryn Menneer ◽  
Mohammad S Nomani ◽  
Michael J Stroud ◽  
Nick Donnelly
Keyword(s):  
Visual Search ◽  
The Other ◽  
Multiple Target ◽  
Target Search ◽  
Single Target ◽  
Dual Target

Previous research shows that visual search for two different targets is less efficient than search for a single target. Stroud, Menneer, Cave, and Donnelly concluded that two target colours are represented separately based on modelling the fixation patterns. Although those analyses provide evidence for two separate target representations, they do not show whether participants search simultaneously for both targets, or first search for one target and then the other. Some studies suggest that multiple target representations are simultaneously active, while others indicate that search can be voluntarily simultaneous, or switching, or a mixture of both. Stroud et al.’s participants were not explicitly instructed to use any particular strategy. These data were revisited to determine which strategy was employed. Each fixated item was categorised according to whether its colour was more similar to one target or the other. Once an item similar to one target is fixated, the next fixated item is more likely to be similar to that target than the other, showing that at a given moment during search, one target is generally favoured. However, the search for one target is not completed before search for the other begins. Instead, there are often short runs of one or two fixations to distractors similar to one target, with each run followed by a switch to the other target. Thus, the results suggest that one target is more highly weighted than the other at any given time, but not to the extent that search is purely successive.

Investigation of ultra-thin films of YBa2Cu3O7−δ grown on MgO

1990 ◽  
Vol 48 (4) ◽  
pp. 6-7
Author(s):  
S.K. Streiffer ◽  
C.B. Eom ◽  
J.C. Bravman ◽  
T.H. Geballet
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Deposition Process ◽  
Nucleation And Growth ◽  
Multilayer Structures ◽  
Rf Power ◽  
Oxygen Loss ◽  
Transmission Electron ◽  
Single Target ◽  
Mtorr Argon

The study of very thin (<15 nm) YBa2Cu3O7−δ (YBCO) films is necessary both for investigating the nucleation and growth of films of this material and for achieving a better understanding of multilayer structures incorporating such thin YBCO regions. We have used transmission electron microscopy to examine ultra-thin films grown on MgO substrates by single-target, off-axis magnetron sputtering; details of the deposition process have been reported elsewhere. Briefly, polished MgO substrates were attached to a block placed at 90° to the sputtering target and heated to 650 °C. The sputtering was performed in 10 mtorr oxygen and 40 mtorr argon with an rf power of 125 watts. After deposition, the chamber was vented to 500 torr oxygen and allowed to cool to room temperature. Because of YBCO’s susceptibility to environmental degradation and oxygen loss, the technique of Xi, et al. was followed and a protective overlayer of amorphous YBCO was deposited on the just-grown films.

Single-Block, Single-Target, Implicit Association Test

2011 ◽  
Author(s):  
Axel Zinkernagel ◽  
Wilhelm Hofmann ◽  
Friederike X. R. Dislich ◽  
Tobias Gschwendner ◽  
Manfred Schmitt
Keyword(s):  
Implicit Association Test ◽  
Association Test ◽  
Implicit Association ◽  
Single Target ◽  
Single Block
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